1 files changed, 42 insertions, 0 deletions
diff --git a/externals/oboe/src/flowgraph/SourceFloat.cpp b/externals/oboe/src/flowgraph/SourceFloat.cpp
new file mode 100644
index 0000000000..a0c88275a0
--- /dev/null
+++ b/externals/oboe/src/flowgraph/SourceFloat.cpp
@@ -0,0 +1,42 @@
+/*
+ * Copyright 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <algorithm>
+#include <unistd.h>
+#include "FlowGraphNode.h"
+#include "SourceFloat.h"
+
+using namespace FLOWGRAPH_OUTER_NAMESPACE::flowgraph;
+
+SourceFloat::SourceFloat(int32_t channelCount)
+        : FlowGraphSourceBuffered(channelCount) {
+}
+
+int32_t SourceFloat::onProcess(int32_t numFrames) {
+    float *outputBuffer = output.getBuffer();
+    const int32_t channelCount = output.getSamplesPerFrame();
+
+    const int32_t framesLeft = mSizeInFrames - mFrameIndex;
+    const int32_t framesToProcess = std::min(numFrames, framesLeft);
+    const int32_t numSamples = framesToProcess * channelCount;
+
+    const float *floatBase = (float *) mData;
+    const float *floatData = &floatBase[mFrameIndex * channelCount];
+    memcpy(outputBuffer, floatData, numSamples * sizeof(float));
+    mFrameIndex += framesToProcess;
+    return framesToProcess;
+}
+